MESON Chess Problem Database

Problem Display
PID: 172259 (8/8/bp6/k7/8/K4Q2/8/8 w - - 0 1)

Andreev, Aleksandr Grigorevich

Kubanski krai, 1996

8/8/bp6/k7/8/K4Q2/8/8

#2

2 + 3

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Kb5
      • 2.Qd5#
  • Tries
    • 1.Qd1?
      • threat
        • 2.Qa4#
      • 1...Kb5
        • 2.Qd5#
      • 1...b5
        • 2.Qd8#
      • 1...Bb5!
    • 1.Qd5+?
      • 1...b5
        • 2.Qd8#
      • 1...Bb5!
    • 1.Qc6?
      • threat
        • 2.Qa4#
      • 1...b5
        • 2.Qc7#
      • 1...Bb5!
  • Keys
    • 1.Qa8!
      • 1...Kb5
        • 2.Qd5#
      • 1...b5
        • 2.Qd8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(a);P-FLIGHT::QAR2(B)
  • Tries
    • Try
      • Q(B);
      • Threat
        • QAR1(B)
      • Vars
        • K(a);P-FLIGHT::QAR2(B)
        • P(c);OGATEB,SBLOCK::QAB(B)
      • Refutation
        • B(b);
    • Try
      • Q(B);CHECK
      • Vars
        • P(c);OGATEB,P_SPINP(c),SBLOCK::QAB(B)
      • Refutation
        • B(b);P_SPINB(b)
    • Try
      • Q(B);
      • Threat
        • QAR1(B)
      • Vars
        • P(c);OGATEB,SBLOCK::QAB(B)
      • Refutation
        • B(b);
  • Actual
    • Q(B);P_PINB(b)
    • Vars
      • K(a);N_SPINB(b),P-FLIGHT::QAR2(B)
      • P(c);OGATEB,SBLOCK::QAB(B)
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